Beefy Boxes and Bandwidth Generously Provided by pair Networks
Pathologically Eclectic Rubbish Lister

Re: Setting a variable equal to a reference

by ikegami (Pope)
on Jul 31, 2013 at 02:03 UTC ( #1047154=note: print w/ replies, xml ) Need Help??

in reply to Setting a variable equal to a reference

delete $foo->{by_id}{0} deletes an element of the hash %{ $foo->{by_id} }.

The value of that element is a ref. That ref is not referenced by anything else, so it will be freed.

The referenced hash is is referenced by something else (the ref in $foo->{by_name}{bob}), so it won't be freed.


Nothing touches the hash %{ $foo->{by_name} }.

Nothing touches the ref in $foo->{by_name}{bob} (a copy of the ref that was in $foo->{by_id}{0}).

The hash referenced by $foo->{by_name}{bob} is not freed.

Comment on Re: Setting a variable equal to a reference
Select or Download Code

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1047154]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (12)
As of 2015-03-04 19:11 GMT
Find Nodes?
    Voting Booth?

    When putting a smiley right before a closing parenthesis, do you:

    Results (124 votes), past polls